package singleton;

/**
 * 
 * @author shadow E-mail:zyydqpi@163.com
 * @Date 2016年8月28日下午7:21:32
 * @version 1.0
 * @since 单例模式
 **/
public class Singleton {
	private static Singleton instance;

	private Singleton() {

	}
	public static Singleton getSingleton() {
		if (instance == null) {
			synchronized (Singleton.class) {
				if (instance == null) {
					instance = new Singleton();
				}
			}
		}
		return instance;
	}
}
